Gun-barrel.



PATBNTED AUG."7, 1906.

8. R. BELLAMY.

.GUN BARREL. Y PPLIoATIoN rILnD 1mm. 190s.

UNITED STATES PATENT. OFFICE.

CHARLES ROSS ELLAMr, or sHREvEPoET, Leni-SIAM, AssiGNoR or' ONE-FOURTH ro SAM E. THOMPSON AND ONE-FOURTH To JAMES H.

BELLAMY, or SHREVEPORT, LouisiANA.

GUN-BARREL.

' i Specification of Letters Patent.

Application led March 1, 190B. Seal No. 303,696-

To wll'whm ifiwaulam a; Be it known th t I, Ross'BEL- LAMY, a citizen of the United States, residin at Shreveport, in the parish of Caddo an State of Louisiana, have invented certain new and useful Improvements in Gun-Barrels; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the\ art to which it appertains to make and use fthe same.

My invention is an improved gun-barrel provided with a detachable choke-piece, of which any desired number may be used, so that a single barrel may be employed in connection with an appropriate c oke-piece for any kind of shooting; and my invention consists of the construction, combination, and. arrangement of devices hereinafter described and claimed.

In the accompanying drawings, Figure l is an elevation of a gun the barrel of which is provided with a detachable choke-piece in accordance with my invention. Y Fig. 2 is a detail top plan view of a portion of the barrel with the detachable choke-piece attached thereto. Fig. 3 is aV sectional view of the same, taken on the plane indicated by the line a a of Fig. 2. Fig. 4 is a detail transverse sectional view taken on the plane'indicated bythelinebbofFigZ.

The barrel l, which may be of any suitable construction, is provided with a muzzle-sight (indicated at 2) on a block 3, which is here shown vas dovetailed inplace and which may be secured to the barrel by any suitable means or in any suitable manner. I utilize this sight-block as a lock-block in the securing of the choke-piece to the muzzle of the barrel, as hereinafter described. The chokepiece 4 has its inner end screw-threaded, as

at 5, and is provided with ratchet-teeth 6.

I also provide a cylindrical sleeve 7. Said sleeve is provided at one end with a bayonetslot 8 having a long arm 9, a short arm 10 forming a lateral extension of the inner end thereof and artially divided therefrom by a stud 11. T e width of the long arm is equal to that of the sight-block on the muzzle of the barrel, so that said arm serves to clear the said sight-block `and enable the sleeve to be laced on the muzzle of the barrel. The space between the stud 11 and the inner end of the iff-block, so'that the sleeve ma be turned to dispose the sight-block in the s ort arm l0 .of the bayonet-slot and to engage the inner side of the stud 11, as shown in Fig. 2. The

outer end of the sleeve is interiorly screwthreaded to receive the screw-threaded end of the choke-piece. On the under side ofthe sleeve is secured a spring-detent l2. The said detent has its stud 13 extended through an opening in the under .side of the sleeve, and when the choke-piece is screwed into the f sleeve `and caused to engage the muzzle of the barrel and draw the sleeve out to the extent required to engage the stud 11 with the sightblock of the barrel the stud of the spring detent or keeper 12 engages the ratchet-teeth of the choke-piece successively as the latter is turned and when it is sufficiently tight prevents reverse turning thereof, and hence coacts with the bayonet-:slot of the Sleeve and the sight-block to securely attach the chokepiece to the barrel. To detach the-chokepiece from the barrel, the detent or keeper 12 must be iirst disengaged from the ratchetteeth of the choke-piece and the latter reversely turned suiiiciently to enable the sleeve to be disengaged from 'the sight-block on the barrel. 4'Since the `function of this sight-block in coaction with the sleeve is to lock the latter on the barrel, I employ the term lock-block thereto in the claims, as the lsaid block is not necessarily, also7 employed in connection with the muzzle-sight.

It will be understood that by providing the barrel with an appropriate bore yand emplo ing a number of choke-pieces therewith t e gun may be used for various kinds of shoot- Having vthus described my invention, what I claim as new, and desire to secure by Letters Patent, is*

1. A gun-barrel having :a lock-block near its muzzle, combination with a sleeve `to iit and move longitudinally on the muzzle and having abayonet-.slot to engage and clear said block, a choke-piece, and means to detachably secure the choke-piece in the sleeve and permit longitudinal movement of the choke-piece therein,for the purpose set forth.

2. A gun-barrel having a lock-block near its muzzle, in combination with a sleeve to iit and move longitudinally on the muzzle and IOO royl

ha a bayonet-slot to engage and clear said b ook, and a choke-piece, said sleeve and choke-peca having coacting screw-threads enabling the choke-piece to be fitted and moved ngitudinally in the sleeve to engage and disengage the muzzle of the barrel and coact with the sleeve to engage and disengage the lock-block and the bayonet-slot, for the purpose set forth.

3. A -barrel having a lock-block near its muzz e, in combination with a sleeve to t and move longitudinally on the muzzle and ha a bayonet-slot to engage and clear said b ock, a choke-piece having screw connection with the sleeve to enable the chokepiece to fit sleeve and e of the barrel, or the purposes set forth, and means to lock the choke-piece against casual movement in the sleeve when said chokepiece is in contact with the muzzle of the barrel, substantially as described.

and move longitudinally in the] age and disengage the muzzle` 4. A its muzz e, in combination with a sleeve to it and move longitudinally on the muzzle and having a bayonet-slot to engage and clear said block, a choke-piece havin screw connection with the sleeve to ena le the choke-piece to fit and move longitudinally in the sleeve and engage and disengage the muzzle of the barrel, for the purposes set forth,

and being further provided with ratchetteeth extending around the same, and a detent carried by the sleeve to coact with said vratchet-teeth to prevent reverse turning of the choke-piece, substantially as described.

In testimony whereof I have hereunto set my hand 1n presence of two subscribing Witnesses.

CHARLES Ross BELLAMY.

Witnesses A. K. LIDE, W; M. STEWART.

-barrel having a lock-block neal 

